/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/11a-double-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 14:03:31,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 14:03:31,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 14:03:31,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 14:03:31,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 14:03:31,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 14:03:31,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 14:03:31,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 14:03:31,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 14:03:31,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 14:03:31,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 14:03:31,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 14:03:31,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 14:03:31,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 14:03:31,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 14:03:31,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 14:03:31,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 14:03:31,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 14:03:31,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 14:03:31,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 14:03:31,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 14:03:31,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 14:03:31,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 14:03:31,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 14:03:31,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 14:03:31,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 14:03:31,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 14:03:31,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 14:03:31,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 14:03:31,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 14:03:31,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 14:03:31,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 14:03:31,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 14:03:31,720 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 14:03:31,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 14:03:31,721 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 14:03:31,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 14:03:31,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 14:03:31,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 14:03:31,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 14:03:31,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 14:03:31,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 14:03:31,722 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 14:03:31,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 14:03:31,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 14:03:31,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 14:03:31,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 14:03:31,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 14:03:31,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 14:03:31,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 14:03:31,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:03:31,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 14:03:31,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 14:03:31,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 14:03:31,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 14:03:31,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 14:03:31,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 14:03:31,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 14:03:31,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 14:03:32,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 14:03:32,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 14:03:32,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 14:03:32,015 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 14:03:32,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/11a-double-end.c [2021-03-11 14:03:32,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c0c16de2/69de9f1183304d238fb5d957a375f463/FLAGb6e16a6b5 [2021-03-11 14:03:32,461 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 14:03:32,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/11a-double-end.c [2021-03-11 14:03:32,462 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 14:03:32,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c0c16de2/69de9f1183304d238fb5d957a375f463/FLAGb6e16a6b5 [2021-03-11 14:03:32,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c0c16de2/69de9f1183304d238fb5d957a375f463 [2021-03-11 14:03:32,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 14:03:32,848 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 14:03:32,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 14:03:32,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 14:03:32,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 14:03:32,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:03:32" (1/1) ... [2021-03-11 14:03:32,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@216091ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:32, skipping insertion in model container [2021-03-11 14:03:32,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:03:32" (1/1) ... [2021-03-11 14:03:32,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 14:03:32,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 14:03:32,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 14:03:32,999 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 14:03:33,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 14:03:33,019 INFO L208 MainTranslator]: Completed translation [2021-03-11 14:03:33,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:33 WrapperNode [2021-03-11 14:03:33,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 14:03:33,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 14:03:33,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 14:03:33,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 14:03:33,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:33" (1/1) ... [2021-03-11 14:03:33,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:33" (1/1) ... [2021-03-11 14:03:33,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 14:03:33,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 14:03:33,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 14:03:33,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 14:03:33,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:33" (1/1) ... [2021-03-11 14:03:33,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:33" (1/1) ... [2021-03-11 14:03:33,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:33" (1/1) ... [2021-03-11 14:03:33,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:33" (1/1) ... [2021-03-11 14:03:33,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:33" (1/1) ... [2021-03-11 14:03:33,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:33" (1/1) ... [2021-03-11 14:03:33,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:33" (1/1) ... [2021-03-11 14:03:33,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 14:03:33,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 14:03:33,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 14:03:33,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 14:03:33,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:03:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 14:03:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 14:03:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 14:03:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-11 14:03:33,124 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-11 14:03:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 14:03:33,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 14:03:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 14:03:33,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 14:03:33,127 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 14:03:33,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 14:03:33,280 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 14:03:33,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:03:33 BoogieIcfgContainer [2021-03-11 14:03:33,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 14:03:33,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 14:03:33,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 14:03:33,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 14:03:33,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:03:32" (1/3) ... [2021-03-11 14:03:33,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8174966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:03:33, skipping insertion in model container [2021-03-11 14:03:33,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:33" (2/3) ... [2021-03-11 14:03:33,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8174966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:03:33, skipping insertion in model container [2021-03-11 14:03:33,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:03:33" (3/3) ... [2021-03-11 14:03:33,287 INFO L111 eAbstractionObserver]: Analyzing ICFG 11a-double-end.c [2021-03-11 14:03:33,292 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 14:03:33,292 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 14:03:33,295 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 14:03:33,295 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 14:03:33,311 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,311 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,311 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,312 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,312 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,312 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,312 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,312 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,313 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,313 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,313 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,313 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,315 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,315 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,315 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,316 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:33,318 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 14:03:33,331 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-11 14:03:33,345 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 14:03:33,345 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 14:03:33,346 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 14:03:33,346 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 14:03:33,346 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 14:03:33,346 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 14:03:33,346 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 14:03:33,346 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 14:03:33,354 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 14:03:33,363 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 25 transitions, 55 flow [2021-03-11 14:03:33,365 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 25 transitions, 55 flow [2021-03-11 14:03:33,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 25 transitions, 55 flow [2021-03-11 14:03:33,384 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-11 14:03:33,384 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 14:03:33,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 24 events. 0/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 14:03:33,386 INFO L116 LiptonReduction]: Number of co-enabled transitions 80 [2021-03-11 14:03:34,136 INFO L131 LiptonReduction]: Checked pairs total: 74 [2021-03-11 14:03:34,137 INFO L133 LiptonReduction]: Total number of compositions: 20 [2021-03-11 14:03:34,145 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 7 transitions, 19 flow [2021-03-11 14:03:34,151 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-03-11 14:03:34,157 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:03:34,157 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-03-11 14:03:34,157 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:03:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:03:34,165 INFO L82 PathProgramCache]: Analyzing trace with hash 105628, now seen corresponding path program 1 times [2021-03-11 14:03:34,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:03:34,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865629814] [2021-03-11 14:03:34,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:03:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:03:34,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:34,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:03:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:03:34,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865629814] [2021-03-11 14:03:34,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:03:34,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 14:03:34,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994556307] [2021-03-11 14:03:34,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 14:03:34,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:03:34,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 14:03:34,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 14:03:34,269 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:34,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:03:34,276 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2021-03-11 14:03:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 14:03:34,277 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-03-11 14:03:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:03:34,281 INFO L225 Difference]: With dead ends: 8 [2021-03-11 14:03:34,281 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 14:03:34,282 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 14:03:34,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 14:03:34,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 14:03:34,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 14:03:34,296 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2021-03-11 14:03:34,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:03:34,296 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 14:03:34,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 14:03:34,296 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 14:03:34,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 14:03:34,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:03:34 BasicIcfg [2021-03-11 14:03:34,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 14:03:34,301 INFO L168 Benchmark]: Toolchain (without parser) took 1455.04 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 234.5 MB in the beginning and 259.6 MB in the end (delta: -25.1 MB). Peak memory consumption was 73.2 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:34,301 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:03:34,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.18 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 233.9 MB in the beginning and 337.1 MB in the end (delta: -103.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:34,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.25 ms. Allocated memory is still 354.4 MB. Free memory was 337.1 MB in the beginning and 335.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:03:34,303 INFO L168 Benchmark]: Boogie Preprocessor took 11.76 ms. Allocated memory is still 354.4 MB. Free memory was 335.7 MB in the beginning and 335.0 MB in the end (delta: 710.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:34,303 INFO L168 Benchmark]: RCFGBuilder took 226.08 ms. Allocated memory is still 354.4 MB. Free memory was 335.0 MB in the beginning and 322.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:34,304 INFO L168 Benchmark]: TraceAbstraction took 1016.68 ms. Allocated memory is still 354.4 MB. Free memory was 322.4 MB in the beginning and 259.6 MB in the end (delta: 62.8 MB). Peak memory consumption was 64.6 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:34,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 170.18 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 233.9 MB in the beginning and 337.1 MB in the end (delta: -103.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.25 ms. Allocated memory is still 354.4 MB. Free memory was 337.1 MB in the beginning and 335.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.76 ms. Allocated memory is still 354.4 MB. Free memory was 335.7 MB in the beginning and 335.0 MB in the end (delta: 710.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 226.08 ms. Allocated memory is still 354.4 MB. Free memory was 335.0 MB in the beginning and 322.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1016.68 ms. Allocated memory is still 354.4 MB. Free memory was 322.4 MB in the beginning and 259.6 MB in the end (delta: 62.8 MB). Peak memory consumption was 64.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 771.9ms, 29 PlacesBefore, 11 PlacesAfterwards, 25 TransitionsBefore, 7 TransitionsAfterwards, 80 CoEnabledTransitionPairs, 4 FixpointIterations, 8 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 20 TotalNumberOfCompositions, 74 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 67, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 52, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 52, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 54, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 67, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 52, unknown conditional: 0, unknown unconditional: 52] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - PositiveResult [Line: 36]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 953.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.3ms, AutomataDifference: 24.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 805.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.0ms SsaConstructionTime, 11.4ms SatisfiabilityAnalysisTime, 23.5ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 2 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...